Ribbon spool for printing machines



Nov. 8, 1932; H. c. osBbRN 1,887,184

RIBBON SPOOL FOR PRINTING MACHINES Filed Nov. 14. 1929 -sneets-sneet 1- F'il 5.1.

gmentot 8." 1932. H. c. OSBORN 1,887,184

- RIBBON SPOOL FOR PRINTING MACHINES Filed Nbv. 14. 1929 2 Sheets-Smut 2 FIE E FIBJIJ -rying a pair of spools Patented Now-8, 1932 UNITED STATES.

PATENT? (OFFICE:

HENRY O. OSBOBN, OI ('ILEVE JLANI),v OHIO,' ASSIGNOB, BY .MESNE ASSIGNMENTQ' TO m'rmaarn COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELA- WARE RIBBON SPOOL FOB PRINTING IAGHINES Application fled November 14,1929. serial No. 407,049.

This invention relates to spools suitable for can-lying wound-up ribbons. Ofiice printing mac mes having a-rota printin drum caror'an in ing ribbon are in extensive use under the name of the multigraph. In a standard multigraph the spools have round holes in their ends enabling t em to be readily mounted on round pins carried bythe drum. However in some special multigraphs the drum is materially wider.

than the length of the spool and the spool is slidably mounted on an angular driving rod, so that itmay be adjustable in position or a lurality of spools carried in alignment. In t is case, the spools. have angular holes therein so that the rotation of the rod will rotate'the spool.

It is the articular object of this invention to provide a spool adapted for mounting in the standard multigraph, but so arranged that it may be readily converted. into 'a spool suitable formounting on the angular rod of the special multigra'ph mentioned.

I accomplish the result by formin the spool ends with rudimentary angular oles normally closed by material carrying round holes. This enables a spool to be put on the market adapted for mounting in the standard .multigraph, but, by simply removing the small piece of material carryingthe "round hole and exposing the angular hole, I can immediately adapt the spool for mounting in the machines having the angular rod feed.

The spools are preferably made of a sheet metal barrel and sheet metal heads stamped to shape. The angular rod of the wide multigraph on the market is hexagon shape in cross section. .Accordingly, in making this new spool in an economical manner, I stamp onto the central regionof the spool a recess having a hexagon exterior of a 'sizecorrespending to the hexagon rod mentioned, and

I form a round hole through the displaced hexagon portion. This stamped hexagon portion is preferably entirely severed from the surrounding portion of the headexcept for two small narrow tongues connecting-it with the remainder of the spool head, these tongues being diametrically opposite each other. This enables the head to be as'eoonomically stamped as the standard head, and

the spool used in the identical manner of the standard spool, but whenever desired, asmall screw driver or other tool may be inserted in the round hole and the part-having the hexagon exterior pried loose from the restv of the head, thus converting the spool into one having hexagon holes in its ends. My spool is clearly shown in the drawings hereof, as well as itsmanner of'use, both before'and after alteration, and is herein- I Figs. 3and 4 are enlarged fragmentar diagrammatic sections in planes indicated y'the lines 3-3 and 4-4 onZFig. 2 Fig. 5 is an end elevation of the spoolgwith-a tool in the act of prying out the central region of the end;

Fig. 6 is a view inthe nature of 9. dia am illustrating the pried out portion an hole left in the end of the spool; Fig. 7 is avertical transverse section through a standard multigraph having the usual spools; Fig. 8 is avertical longitudinal section of the same; Fig.9 is an enlarged sectional view at the driving end of one ofsuch spools; Fig. I I

10 is a longitudinal vertical section of one of the wide multigraphs having the hexagonal rod for carrying a plurallty of spools or a variably positioned sp'ool; Fig. 11 is a sectional view illustrating the spool drive of this type of multigraph.

As illustrated in Figs. 7 to 11 inclusive, 1Q designates the end frame plates of a multigraph carrying a drive shaft 11 on which is mounted the endmembers 12 and 13 of a skeleton drum, this drum carrying a printing segment 15 which is clamped to the shaft by spring hooks 16. Parallel with the drum is a roller platen 17 with which the drum coacts. Mounted in the 'drum are ribbon spools 20 or 20a, on which the ends of an inking ribbon 25 are wound, thisribbon passing intermediately about the printing members on the drum so that the rotation of the drum in coaction with the platen may print on an intermediate sheet of paper. 4

In the standard multigraph, the end memthe H the spool end, the ot carried by a round spring pressed stud 35- her 12 of the drum carries a central stud 30 on which 'is journalled a ratchet wheel 31 having a driving lug32 to engage a recess in er end of the spool being feed the ribbon step by step.

1 In Figs. 10 and 11, I have illustrated one of the extra wide multigraphs wherein the spools are mounted on hexagonal rods 40. This rod 46 has round holes in its ends to receive the studs and 35 respectively, and has also at the driving end a. collar 41 which has in it a notch engaged by the driving lug 32 of the ratchet drive. is shown and claimed in the pending application @3911? 16 filed September 11th, 1929, by Lawrence H. Morse and asigned to my assignee The American Multigraph Comany. P Now, my problem is to devise a simple ribbon spool suitable for mounting in the standard multigraph of Figs. 7, 8 and 9, but readily convertible for mounting on the hexa gonalrod multigraph of Figs. 10 and 11. The spool by which I accomplish this is illustrated in Figs. 1 to 6 inclusive and will now.

be particularly described.

My spool has a sheet metal barrel 50, which may have a longitudinal slot 51 for the in sertion of a head on the ribbon, and is provided at its ends with sheet metal heads 52. These heads are secured to the barrel by integral tongues 53 of the barrel which extend through holes 54 in theheads and are then bent over inwardly on the head as shown in,

Figs. 1 and 2. Each head 52 is dished or depressed in an intermediate circular region 55.

I for 'a distance about equal to the thickness of the metal, as shown inFigs. 3 and 4. In the central region of this dished portion 55 I press outwardly a hexagonal region 56. The amount of outward displacement of the hexagonal'region is just about equal to the thickness ofthe metal and accordingly this hexagonal region for the greater-part of its contour is ust barely detached from the rest of the head, but it remains firmly connected therewith by two diametrically opposite tohgues 57. The inward and outward dis placements of the metal of theihead compensate each other, so that the round hole is in the identical position of that in the former multigra'ph spools.

I find the new spool made as described, has

ample strength for use in the standard multigraph and may remain as a rbundhole spool throughout its life.

Now, when it is desired to mount one of This construction.

these new spools on the hexagon-bar multigraph, it is only necessary to insert a suitable tool, as an awl or a small screw driver, into the central openin 58 of the hexagon portion and it slig tly in the direction transverse o t e diametric line connecting the tongues, such tool being illustrated at A in Figs. 5 and 6. This readily pries the hexagon region entirely free from the rest of the s 001. In such operation a clear hexagon ho e 59 is left in the head, the tongues breaking off slightly at the outside of the hexagonal contour, as illustrated in Fig. 6. When thesehexa onal regions are broken out from the spoo heads, it is in shape for mounting in the hexagonal rod 40 in the ma head provided with a rudimentar hole and" r with'means. integral with the hea normally closing the hole and itself having a hole of diflerent character from-the contour of the I rudimentary hole, whereby the removal of said meansproduces an effective hole of dif ferent character.

3. A spool having a sheet metal head, a

plane of the surrounding material. but connected with it by a readily frangible connection, and journalling means carried by said central region.

central region of the head distorted from the I 4. A spool havinga head, a central region ofiset from the surrounding portion of the head, said central region having a holethrough it and there being an incomplete hole the offset region, said oiiset region bein readily removable from the rest of the hea to complete the last mentioned hole.

' -5. A spool having a sheet metal head, a

stamped up central region of'the head havn an angular exterior and central hole jourand a circular interior o'fisetfrom the plane of the surrounding region of the head and Still Connected with it whereby the shape and in the head corresponding to the exterior of a central region having an, angular exterior size of the effective hole the head 7 the head by a distance approxlmatelg opening a whenthe outwardly depressed portion is attached, the connection ofthe outwardlydemay be varied by remo the ofiset region. 8. A spool having a he with a hexagonal recess therein, a portion of the head having its exterior corresponding to the recess offset 7 from the plane of the surrounding portion of equal to thethickness of the head, said 0 set re gion being connected to the head by two di'a metrically oppositetongues. 9. A spool having a barrel and a head, the head having a region depressed inwardly into the barrel and the depresed portion having a-region depressed outwardly, said outwardly. depressed .portion having an where y the spool may be mounted I ressed portion with the rest of the head ing of materially reduced st 11 whereby such outwardly depressed portion may be metal he readily removed without disturbing the rest ofthe head and thereby leave an'opening of 10. 'A' sipool a barrel and a sheet a V depressed inwardly into the barrel and the ,the head having a central region signature.

HENRY G. OSBOBN.

difl'erent dimension inthe endof the head.

depressed portion having a smaller central region depressed outwardly for a distance substantially corresponding to the amount of the inward depression, said outwardly depressed portidn having means whereby the spool may be mounted when the outwardly depressed portion is attached, the removal of the outwardly depressed portion leaving a mounting hole in the head.

'11; 1A ribbon spool for a printing machine the completion of said comprising a sheet metal barrel equipped with sheet metal heads at its opposite ends,

each head having an inwardly pressed region of each head. being fora smaller area outwardly depressedto provide an offset region connectedina frangible di erent type of mounting.

epressed re- 4 gion to enter the barrel, the inwardlyrde- 'mannerwith the. rest of the head, said ofiset region being. of angular form having its internal contour adapting the spool for mounts ing inone type of machine and -its exterior contour being of such size and shape that the opening left in the head when the angular re on removed ada ts the spool fora 12. As a new articleof manufacture, a

001 having an axialopening carried .by a xed but readily remov'a 1e part of the head and-means defining the external contour o e I such part so that its removal leaves a definite sized opening -of diiferen't form from the originaAl openmg' spool having sheet metal heads at its opposite ends,-each head having a central hole and an incomplete line of severance extending about the region im mediately surrounding having a difierent shape from the hole where- ;the hole, said lines juo 

